Lens



FIG. 1 is a top, right perspective view of a lens showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view thereof, a left side elevational view thereof being a mirror image; and

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a cross sectional view thereof along the line 5-5 of FIG. 2.

The portions indicated in broken lines are for illustrative purposes only and form no part of the claimed design. 

CLAIM The ornamental design for a lens, as shown and described. 